Thread-cutting temple for looms



p49, e hh ..32 OO NT .Gf 65M 1. v nL lm s, w e L R5` www EE-1 wm@ TE ST1.M m .Mfw Mmm G1 .DAM E R H T sept. l14 1926.

" and thread cutting` mechanism suiiicient to` make clearkr theconstruction Vand operation Patented Sept. 14, 1926.

' UNITED SfflarlEl-Si MELVIN L. sToNE, or fmiwnnnon, MAssAcHUsE'rrs,Assrsnon 'ro Daarna o onPo-RA- e PATENT-lorries Tron, or HoPnnALE,MAssacHUsETTs'A ooRroRA'rroN'oF-'Mamn THREAD-.CUTTING TEMPLE FOR LOOMS.

sppneangn med A pril so, 192e. serialV no. 105,692,

This invention relates to athread cutting temple for looms such asgenerally employed for eutting filling ends left entending at theselvage of the cle-oth.beingA woven. y

When a loom provided with the ordinary 'type of thread cutting temple/isstopped land the operative pieces a Warp vor filling end,v

or makes some adjustment or repain he is very apt to move the lay backand forth and as the layl when moved forwardly to a suflicientextentyoperates the temple thread cutter, it not infrequently happensthat the runningl vfilling is accidentally cut.' lVhen ythe operativestarts the loom, he usually hashis hand on the shipper lever anddoesnotjnotice the indicationof the` weft fork andv thus the loom startsweaving with a mispick resultingA from the severed filling.

The object ofthe present invention lis tol provide means for preventing-the cuttingV mechanism from functioningT when the loom is thusstopped,A but which will not interfere wit-tithe normal cuttingoperation when the loom is running rifhe object of the invention isfurther to, provide a guard finger. normally standing at therear face ofthe temple head adjacent the movable cutter memberoiithe thread cutting`temple, together with meansacting upon the stopping of the loomtQproject this guard finger rearwardly so` that it wiljlhol-d therunning filling away from the cutting' mechanism and prevent the cuttingoperation even if lthe ljay be swung and forth while the 106m is stillstopped.V v

These and otlierobjects and features of the invention will appear` morefully from the accompanyingr description and drawings and will beparticularly pointed out in the claims. As the general constructionandoperation of thread cuttingtemples and of theloom mechanism 'ofvarious types iswell known and familiar to those skillged in .the art,`it is only necessary hereto illustrate and describe a portion of atypical form of loomftemple of@ preferred form of the present invention.

parts immediately connected with i".

Fig. 3 is` a view similar tothe upper portion of liig.` 1 show-ingtheparts in positiony assumed when the loomkis stopped and with" thev layapproaching its'forwar'd position.

Fig. 4 is a top plan view of the'construof tion shown in Fig. V1. 1

rlheside frame `lof the loom is provided with the usual breast beam -2carrying the bracket 3, to which is bolted or otherwise secured thehollow boxflike temple stand 4.y

The temple comprises a shank 5 and a head 6 extending transversely ofthe rearward `end ofV the shank. The shank 5 is mounted to reciprocaterearwardly and forwardlyin' the. stand 4 and is normally projectedrear-k wardly by the usual spring4 7 abuttingrthe stand at itsforward'end and a shoulder on the shank at, its rearward end.: Thetemple head comprises the .usual cap 8, pod 9, interposed pin roll. 10and dependingy heel 11.

At each beat-up vof the lay 12, the heel 1 1 is struck kby the lay`moving the temple forwardly slightly andfpreventing injury to f Y l thereed 13.. Y

The thread cutting meohanism'he're illustrated is lof: a familiar typeand comprises a iixed'cutting blade 14 mounted in the rear face of thehead adjacent the end ofthe pin roll 10a-nd a movable cutter blade15mountf ed to slide forwardly and rearwardly in a slot in the templehead, provided at its rear.- ward end, with a hookshaped blade portion16 cooperating with'the. firedv blade 14 and l Vprovided at'its forwardend with a depend-` ing heel 17. The movable cutter blade 15 is normallyprojected 'rearwardly by a spring 18: of the usual type and is givenits` forward rockingA and cutting' movement by the ven-V ragement of'the layon Ythe heataui-v with .the dependmgheel 17.-' j v Suitable meansare provided for starting and stopping the loom either automatically orby hand. The only element necessary to illustrate in connection with thestarting and stopping of the loom is the usual shipper lever 19 pivotedat 2O at the far side of the loom and adapted to swing from the normalrunning position shown in full lines in Fig. 1 to a stopping positionshown in dotted lines in Fig. 1. This shipper Vlever element, when theloom is ruiming, stands normally in its forward position and when theloom is stopped, it is swung to its rearward position. When the loom isstarted, this element is swung in the opposite direction. But anyelement movable between two positions for ruiming and stoppingof theloom may be employed in connection with the present invention. y' i.

A preferred form of the invention is shown embodied in a guard finger 21preferably of comparatively thin yielding metal. and preferably forkshaped, as Vshown in Fig. 2. This guard finger normally standsvertically at the rear face of the temple head adjacent toand straddlingthe hook-shaped vend 16 of the movable cutter member. The

guard finger is shown as depending from and integral with a shank 22mounted to slide rearwardlyand forwardly on the temple.

For this purpose the shank is shown as mounted and guided in lugs 23 and24 projecting upwardly from the temple stand t. Cooperating stops suchVas a collar 25 adjustably secured by means of a setV screw 26 to theshank and the lug 24 act to limit the rearward movement of the guardfinger to a position, as shown in Fig. 3, where it will hold the runningfilling out of the field of the movable cutter blade and prevent it froml' engaging the filling.

A bell crank controller lever comprising a shaft 27 and arms 28 and 29isV suitably fulcrumed in brackets 30 secured to the loom frame. The arm29 extendsupwardly in the path of the shipper lever 19 and is engaged bya spring 31 acting to swing the bell crank lever rearwardly. The arm 28eX- tends upwardly alongside the shank 22 with its extreme end 32directly lbehind a. projection 33 extending laterally from a collar 34adjustably secured by means of a set screw 35 to the shank 22. A helicaltensionspring 36 is connected at its rearward end 37 to the arm 28 andat its forward end to a collar 38 adjustably secured by` a set screw 39to the end of the shank 22.

The shank 22 is provided with a depend-Y ing heel l0 which, when theguard finger 21 is in its rearward position, is aligned with the heel 17of the movable cutter member, as shown in Fig. 3, and which consequentlyis also aligned with the depending heel'l? yott-he movable cutter memberand 11 of the Aconsequt-rntly in its forward running temple when theseheels are moved forwardly by the lay 12.

The parts are so arranged that when the loom is running and the shipperlever 19 is O- sition, `as shown in Fig. 1, the arm p29 is swungforwardly by the shipper lever against the tension of the spring 31 andthrough the arm .28, projection 38 and shank 22 holds the guard finger 21 snugly up against the rear face of the temple head adjacent themovable cutter member. 1n this position the cutter member is free tofunction in its usual-manner and will act to cut any filling endsbrought within its field when the lay beats'up against the lie/e117.Vihen, however, the loom is stopped, and

consequently the shipper lever 19is swung to its rearward posit-ion, thebell crank lever I comprising the arms 28 and 29 rocks rearwardly underthe action of lthe spring 31,

allowing the shank 22 under the action of the springv 36 to sliderearwardly until the stop 25 engages the stop 24 and the guard finger 21is brought. to its rearward positionr shown in Fig. 3. Here the guardlinger prevents the filling from being carried beneath the movablecutter member and consequently the cutting mechanism will not functionto' cut the filling.

Viith the loom stopped and the parts inithis position, if the operativemoves the layVV 12 forwardly andthe lay strikes against the heel 17 oftl'iemovable cutter member, it at the same time strikes against the heel10 ane; thus carries the movable cutter meinbei' and Vthe guard fingerforwardly simultaneously,`

the guardY finger thus still preventing 'enf' gagemeiit of the fillingby the movable c utter member. Consequently it is impossible for therunning filling to be cnt while the loom is stopped as the result of anymove ment of the lay forwardly and rearwardly.v

Not until the loom is started again and the shipper lever 19 swung toits forward or starting position is the guard fingeribrought forward toits normal position and the cutting mechanism permitted to function. 'g

There is thus provided a very simple, ef-V fective and efficientmeansfor preventing the thread cutting mechanism from functioning A whenthe loom is stopped. Thus there is no danger of the running fillingbeing severed and inispicks or imperfections in the weaving` of thecloth occurring. Y Having thus described the invention, what is claimedasnew,fand desired to be secured Aby Letters Patent, is:

1. In a loom, a temple provided with fill'- ing cutting mechanism, anelement having a running and a stopping positionand'moved from theformer to the latter position when' the loom is stopped and from thelatter to the former position when the loom is start= ed, and meanscontrolled by the said element acting to prevent the cut-ting mechanismfrom functioning when the loom is stopped and to permit itsfunctioningwhen the loom is running. i

2. In a loom, a temple provided with fill- 2u standing at the rear faceof the temple head adjacent the cutter member, and means aeting upon thestopping of the loom to project the guard finger rearwardly to aposition to prevent the cutter member from engaging the filling andacting when the loom is started to return the guard linger to normalposition. Y Y j 4L. In a loom, a temple, a cutter member movably mountedin the temple head and 3U having a depending heel by which it is movedforward-ly by the lay tocut the filling, a spring acting to vprojectVthe Cutter member rearwardly ofthehead into filling engaging position,a guard finger normally standing at the rear face of the head adjacentthe cutter member and having a shank mounted to slide forwardly andrearwardly on the temple, means acting upon the stopping of the loom toproject the guard linger en rearwadly to prevent the cutter member fromengaging the filling and acting when the loom is started to return thegua-rd finger to normal position, a heel depending from the shank andaligned with the cutter member heel when the guard and cutter member arein forward and rearward positions whereby, if the lay be swung forwardlywhen the loom is stopped, the guard fingerwill be moved forward with thecutter member while still guarding'the same against engagement with thefilling.

5. In a loom, a shipper lever movable from a running position to astopping position and vice versa. to stop and start respectively theloom, a temple provided with filling cutting mechanism including acutter member normally projectedrearwardly of the. temple head, a.forwardly and rearwardly movable guard finger normally adjacent thecutter member, and a controller lever and means for rocking itcoincidentally with the movement of the shipper lever, the saidcontroller lever acting upon standing at the rear face of the vtempleheadV the movement of the shipper lever to stopii ping position Ltoprojectthe guard linger rearwardlyy to a'positionto prevent the cutermember from engaging the filling and aetingupon the movement of theshipper lever yto running position to return the guard fingerto normalposition.

6,'In a" loom, a shipper lever movable from a ruiming position to astopping position, and vice versa, to stop andstart respectively theloom, a temple provided with filling cutting mechanism including a cut'-ter member normally projected rearwardly of the head, a guard fingerhaving a shank mounted to slide forwardly and rearwardly y on thetemple, the said guard iinger normally standing at theV rear face of theteinple head adjacent the cutter member, a lateral projection on theshank, a controller lever having one arm extending behind the#proiection on the said shank and the other arm engaging the shipperlever, a yielding connection between the said first arm and the shanktending to project the shank rearwardly, and cooperating steps on theshank and temple to limit the rearward movement of the guardV finger toa position where it `will prevent the cutter member 'from engaging thefilling whereby, when the ship-l per lever is moved to'stoppingposition, the guard finger will move to rearward position, and when theshipper lever is moved to starting position, the guard finger will bereturned to its normal position.A 4

In a loom the construction defined in claim 6, together with a heeldepending from the cutter member to be struck-by the llay to effect thecutting movement thereof and a heel *depending from the guard fingershank and aligned with the cutter inember heel when in forward andrearward positions whereby if the'lay beA moved forwardly with the loomstopped, the guard finger will Vbe moved forwardlyv withV the cuttermember while stillz preventing engagement of they filling by the cuttermember.

A8. In a loom, a -teniple provided withV filling cutting mechanismincluding a cutter member mounted in theteniple head and movable from aposition projecting rearwardly of the temple head forwardly to cut thefilling, a shank mounted to slide forwardly and rearwardly on the templeand provided with a guard finger normally standing at the rear face lofVthe head adjacent the cutter member, and means acting when the loom isstopped to project the guard finger and shank rearwardly to a positionto prevent theY cutter member from engaging the filling` and acting whenthe' loom is started to return the guard linger and y shank to normalposition.

9. In a loom, a temple provided with'illing cutting mechanism includinga cutter member mounted in the temple head and movable from a positionprojecting rear- Wardly of the temple head forwardly to cut the filling,a shank mounted to slide forwardly and rearwardly on the temple andprovided with a guard finger normally standing at the rear face of thehead adjacent the cutter member, a shipper lever for 10 stopping andstarting the loom, and means controlled by the shipper lever acting whenthe loom is stopped to project the guard finger and `lshank rearwardlyto a positionV the cutter member from engagto prevent ing the fillingand acting when the loom is started to return the guard linger and shankto normal position.

in testimony whereof, l have signed my name to this specification.

MELvIN L. sToNE.

